Add a main() shortcut

[denilsonsa]

Currently, my unittest has the following code:

unittest.main()

It would be nice to have a colour_runner.main() or colour_runner.runner.main() as a shortcut to:

# Note: untested line!
unittest.main(testRunner=test_runner, *args, *kwargs)

https://docs.python.org/3/library/unittest.html#unittest.main

[leoheck]

I don't know how to use it with unittest.main(). Is it possible? Can you share an example?